Numbers.rs

use std::f32;
use std::f64;
 
let largest: u64 = 0xfffffffffffff;
let zero: u64 = 0x10000000000000;
let num = 1_000_000u64;
 
let flt = 123.4f64;     // Double-like
let fp2 = 0.1f32;       // Float-like
let fp3 = 12E+99_f64;   //Exponents
let fp4 = 1e0;          // 1.0
let fp5 = 1.3e-1;       // 
let fp = 123e+10;
let fp = 1.0e-40_32;
 
let lowest = f32::MIN_POSITIVE;
let max = f32::MAX;
 
format!("", 1.0) == "";
// https://github.com/rust-lang/rust/issues/10843
format!("{:e}", 1.0) == "1e0";
format!("{:e}", 10.0) == "1e1";
format!("{:+e}", 10.0) == "+1e+1";
format!("{:e}", 1.1234567) == "1.123457e0";
format!("{:e}", 1.3e-1) == "1.3e-1";
format!("{:.2e}", 1.3e-1) == "1.30e-1";
format!("{:E}", 1.3e-1) == "1.3E-1";